Network resource configuration for a virtual machine

Abstract

A resource configuration method of a virtual machine and a communications device. When an actual requirement of the virtual machine for the network resource is dynamically changed, the communications device may dynamically configure a communication manner corresponding to the virtual machine such that a virtual machine with a relatively low requirement for the network resource may use the manner of sharing the physical network interface card, and a virtual machine with a relatively high requirement for the network resource may use the pass-through manner, which does not cause a situation in which network resources of some virtual machines are wasted and network resources of some virtual machines are insufficient. As a result, network resources of virtual machines are properly allocated.

What is claimed is: 
     
       1. A resource configuration method of a communications device comprising a plurality of virtual machines and a plurality of physical network interface cards, comprising:
 dynamically acquiring requirement indication information of the plurality of virtual machines for a network resource; 
 dynamically configuring at least one first virtual machine of the plurality of virtual machines to communicate using a first physical network interface card of the plurality of physical network interface cards in a pass-through manner, wherein a requirement indication information of the at least one first virtual machine meets a preset pass-through condition; and 
 dynamically configuring at least one second virtual machine of the plurality of virtual machines to share a second physical network interface card of the plurality of physical network interface cards, wherein a requirement indication information of the at least one second virtual machine does not meet the preset pass-through condition, wherein configuring the at least one second virtual machine to share the second physical network interface card comprises:
 selecting a physical network interface card of the plurality of physical network interface cards whose network traffic or load is less than or equal to a preset value to perform sharing as the second physical network interface card; and 
 changing a hardware network resource in a configuration file of the at least one second virtual machine to a resource of the shared second physical network interface card. 
 
 
     
     
       2. The resource configuration method according to  claim 1 , wherein acquiring the requirement indication information of the plurality of virtual machines for the network resource comprises acquiring network traffic or load of the plurality of virtual machines, and wherein the preset pass-through condition comprises the network traffic or the load is greater than a first threshold, wherein the network traffic or load of the at least one first virtual machine is greater than the first threshold. 
     
     
       3. The resource configuration method according to  claim 1 , wherein acquiring the requirement indication information of the plurality of virtual machines for the network resource comprises acquiring the network traffic or load of each virtual machine of the plurality of virtual machines, wherein the at least one first virtual machine comprises N virtual machines whose network traffic or load ranks ahead, and wherein N is less than a quantity of physical network interface cards. 
     
     
       4. The resource configuration method according to  claim 1 , wherein acquiring the requirement indication information of the plurality of virtual machines for the network resource further comprises:
 acquiring the network traffic or load of each virtual machine of the plurality of virtual machines; and 
 calculating a hash value corresponding to the network traffic or the load of each virtual machine of the plurality of virtual machines, wherein the hash value corresponding to the network traffic or the load of the at least one virtual machine is greater than a second threshold. 
 
     
     
       5. The resource configuration method according to  claim 1 , wherein configuring the at least one first virtual machine to communicate in the pass-through manner comprises:
 changing a hardware network resource in a configuration file of the at least one first virtual machine to the resource of the first physical network interface card. 
 
     
     
       6. The resource configuration method according to  claim 1 , wherein before acquiring the requirement indication information of the plurality of virtual machines of the communications device for the network resource, the method further comprises:
 setting an initial value of the requirement indication information corresponding to each virtual machine of the plurality of virtual machines; 
 configuring a virtual machine whose initial value of the requirement indication information meets the preset pass-through condition to communicate in a pass-through manner; and 
 configuring a virtual machine whose initial value of the requirement indication information does not meet the preset pass-through condition to share a physical network interface card. 
 
     
     
       7. A communications device for resource configuration of one or more virtual machines, comprising:
 multiple physical network interface cards; 
 multiple virtual machines; 
 a memory; and 
 a processor, wherein the memory storing instructions which, when executed by the processor, cause the processor to be configured to:
 dynamically acquire requirement indication information of the multiple virtual machines for a network resource; 
 dynamically configure at least one first virtual machine of the multiple virtual machines to communicate using a first physical network interface card of the multiple physical network interface cards in a pass-through manner, wherein a requirement indication information of the at least one first virtual machine meets a preset pass-through condition; and 
 dynamically configure at least one second virtual machine of the multiple virtual machines to share a second physical network interface card of the multiple physical network interface cards, wherein a requirement indication information of the at least one second virtual machine does not meet the preset pass-through, wherein configuring the at least one second virtual machine to share the second physical network interface card comprises:
 selecting a physical network interface card of the multiple physical network interface cards whose network traffic or load is less than or equal to a preset value to perform sharing as the second physical network interface card; and 
 changing a hardware network resource in a configuration file of the at least one second virtual machine to a resource of the shared second physical network interface card. 
 
 
 
     
     
       8. The communications device according to  claim 7 , wherein the instructions further cause the processor to be configured to acquire network traffic or load of the multiple virtual machines, and wherein the preset pass-through condition comprises network traffic or the load is greater than a first threshold, wherein the network traffic or load of the at least one first virtual machine is greater than the first threshold. 
     
     
       9. The communications device according to  claim 7 , wherein the instructions further cause the processor to be configured to:
 acquire the network traffic or load of each virtual machine of the multiple virtual machines, wherein the at least one first virtual machine comprises N virtual machines whose network traffic or load ranks ahead, and wherein N is less than a quantity of physical network interface cards. 
 
     
     
       10. The communications device according to  claim 7 , wherein the instructions further cause the processor to be configured to:
 acquire the network traffic or load of each virtual machine of the multiple virtual machines; and 
 calculate a hash value corresponding to the network traffic or the load of each virtual machine of the multiple virtual machines, wherein the hash value corresponding to the network traffic or the load of the at least one virtual machine is greater than a second threshold. 
 
     
     
       11. The communications device according to  claim 7 , wherein the instructions further cause the processor to be configured to:
 change a hardware network resource in a configuration file of the at least one first the virtual machine to the resource of the first physical network interface card. 
 
     
     
       12. The communications device according to  claim 7 , wherein the instructions further cause the processor to be configured to:
 set an initial value of the requirement indication information corresponding to each virtual machine of the one or more virtual machines; 
 configure a virtual machine whose initial value of the requirement indication information meets the preset pass-through condition to communicate in a pass-through manner; and 
 configure a virtual machine whose initial value of the requirement indication information set does not meet the preset pass-through condition to share a physical network interface card. 
 
     
     
       13. A communications device, comprising:
 multiple physical network interface cards; 
 multiple virtual machines; and 
 a virtual function system (VFS), wherein the VFS is configured to:
 dynamically acquire requirement indication information of the multiple virtual machines for a network resource; 
 dynamically configure at least one first virtual machine of the multiple virtual machines to communicate using a first physical network interface card of the multiple physical network interface cards in a pass-through manner, wherein a requirement indication information of the at least one first virtual machine meets a preset pass-through condition; and 
 dynamically configure at least one second virtual machine of the multiple virtual machines to share a second physical network interface card of the multiple physical network interface cards, wherein a requirement indication information of the at least one second virtual machine does not meet the preset pass-through condition, wherein configuring the at least one second virtual machine to share the second physical network interface card comprises:
 selecting a physical network interface card of the multiple physical network interface cards whose network traffic or load is less than or equal to a preset value to perform sharing as the second physical network interface card; and 
 changing a hardware network resource in a configuration file of the at least one second virtual machine to a resource of the shared second physical network interface card. 
 
 
 
     
     
       14. The communications device according to  claim 13 , wherein the at least one second virtual machine is configured to share the second physical network interface card using an Open vSwitch. 
     
     
       15. The communications device according to  claim 13 , wherein the VFS is configured to store information about a physical network interface card including driver information in a corresponding first virtual machine.